Scientists are warning that the current outbreak of H5N1 avian influenza is the most rapid and extensive in history, threatening global biodiversity and posing increasing risks to humans as it infects new species.
Sharon Guynup reports for Mongabay.
In short:
- H5N1 avian influenza has impacted 485 bird species and 48 mammal species globally since it broke out in Europe in 2020, now affecting every continent except Australia and the Pacific Islands.
- The virus, initially mild in wild birds, became highly deadly after infecting domestic poultry, facilitated by large-scale poultry farms near wetlands, allowing rapid spread.
- Some species are at risk of extinction due to the continued outbreaks, compounded by existing environmental stressors like climate change and habitat loss.
Key quote:
“They’re really tough animals — and they’re dying.”
— Antonio Quesada, director of the Spanish Polar Committee
Why this matters:
The biodiversity we depend on for clean air, water, and even our food supply is under attack. And as if that's not enough, H5N1 is now crossing the species barrier more frequently, putting humans at greater risk. Read more: Winged Warnings: Built for survival, birds in trouble from pole to pole.
